Apparatus for forming perforated carbons.



M. ,W. ALLEN. APPARATUS FOR FORMING PERFORATED OARBONS. APPLIOATION FILED AUG. 20, 1908.

Patehted Mar.23,1909.

Y 2 SHEETS-SHEET 1.

I 7zv67fi021 M. w. ALLEN. APPARATUS FOR FORMING PERFORATBD OARBONS.

APPLICATION FILED AUG. 20,1908.

Patented Mar. 23,- 1909. 2 sums-sum 2.

77613166666. 56 WM @f U'Niirnn STATES ATENT OFFICE.

MINER w. L EN, or CLEVELAND, onlo, ass ouon TO NATIO AL CARBON COMPANY, A

. CORPORATION or NEW JERSEY. I

APPARATUS FOR FORMING PERFORATED CARBONS.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed August 20, 1908. Serial No. 449,416.

To all whom it may concern:

Be it known that I, MINER W. ALLEN, a

citizen of the United States, residing atCleveland, in the county of Guyahoga andState of :1 Ohio, have invented a certain new and useful Improvement in Ap aratus for Forming Perforated Uarbons, 0 which the following is a full, clear, and exact description.

The object of the present invention is to I provide means for the formation of carbons having a large number of perforations therethrough. i

The invention is particularly directed to the provision of means for insuring the formation of such perforations in the requisite number and with uniformity and the means which I have provided for this purpose embodies certain principles of action discovered by me, which must be inherent in any apparatus capable of successfully producing the desired result.

It being desirable to make as many perforations as possible in the particular carbons which I wish to manufacture, and these perforations being of exceedingly small diameter it has been my purpose to produce apparatus which can be relied upon to turn out the desired product irrespective of such fluctuations in the homogeneity of the mix as might be liable to occasionally occur. It is to this main obj ect,that is to say, of producing this large number of small perforations with absoprojecting therefrom, to be used in the forming die. Fig. 2 is a vertical section which shows the plate with the wires in position in the die. Fig. 3 is a vertical section showing a carbon in the process of formation, and showing the position which the flexible wires occupy during the operation. Fig. 4-is an end view of the die with the perforate plate in position; and Fig. 5 is an end view of a carbon produced by my invention.

In carrying my invention into raetice, I make use of a suitably shaped die having a conical receiving end A. tapering toward a cylindrical passage A of. the diameter which it is desired to'give the finished carbon. In

the receiving end of the die, I insert a perforate'plate or disk B having secured therein a large number of ht flexible Wires C of uniform diameter and exibility, servin as cores for forming the perforations as w' 1 appear below. In the drawings these various arts are shown on a greatly exaggerated sea e for convenience of illustration. plate and the flexible wires fixed therein are shown in Fig. 1 as they appear when out of the die. It will benoted, y referring to this figure and to Fig. 4, that each of these wire cores is so located that it is surrounded at its base by a number of perforations Bin the present' instanee six,which are evenly distributed about the base of the wire and in proximity thereto, and it is through these perforations that the carbon mix is forced into the die when said perforate disk is in position.

When the disk is placed in the die, the wires will, obviously, be bent out of their normal parallelism into a conical cluster somewhat as shown in Fig. 2. hen, how- 7 ever, the mix is forced through the plate,

perforated as described, and fills the conical receiving end of the die and is passed out of the cylindrical sha ing portion thereof, it is found that these exible wire cores assume substantially the position shown in Fig. 3, so that at the outlet end of the die the carbon D 'will, as it is receiving its proper shape, be formed with a number of minute longitudinal perforations D corresponding in number and space to the Wire ends projecting into the shaping portion of the die.

It has been possible to obtain the action here described by reason of the fact that the carbon mix, passing into the die through a number .of perforations substantially evenly spaced about the base of each wire, will maintain its distribution about each wire; and, instead ofpermitting the wires to lie in theirbunched position, which they occupied at first, as shown in Fig. 2, will force them apart an even distance so that they will lie in substantially the position shown in Fig. 3, giving an equal distribution of perforations running parallel with the axis of the die.

I find that it may be advantageous in this is to insure that the cores shall not be 1 The perforate crowded about the periphery of the shaping die, as occasionally happens otherwise.

l:lavi;ng described my invention, I claim: 1. Means for forming carbons with a number of fine perforations therethrough,

comfnising a die, and an end plate for said die carrying a large number of flexible cores, and means for distributingthe carbon mix uniformly about said flexible cores as it passes through the die.

2. Means for forming carbons with fine perforations therethrough, comprising a die, and an end plate therefor, with a large number of flexible cores projecting into the 1 die and having a number of perforations p. about said cores as it is fed into the receiving end.

4. Means for forming perforate carbons comprising a die having a conical receiving end and a cylindrical shaping end, a disk at said receiving end having a large number of flexible cores projecting therefrom into the shaping end of the die, and a number of substantially evenly distributed perforations positioned to feed the mix evenly about the ase of each core.

5. Means for forming perforate carbons comprising a die having a conical receiving end and a cylindrical shaping end, a large number of flexible cores distributed substantially evenly across the receiving end directed in a cone-like cluster into the cylindrical shaping end, and means for distributing carbon mix about the flexible cores to hold the portions thereof in the shaping end at substantially even spacing amll parallel with the axis of such shaping em In testimony whereof, I hereunto allix my signature in the presence of two witnesses.

MINER W. ALLEN.

Viitnesses:

H. R. SULLIVAN, J. M. Woonwmm. 

